Eur. Phys. J. C (2018) 78: 877
https://doi.org/10.1140/epjc/s10052-018-6361-4

Regular Article - Theoretical Physics

Cosmological scenarios from multiquintessence

¹ SISSA-Scuola Internazionale Superiore di Studi Avanzati, via Bonomea, 265, 34136, Trieste, Italy
² Departamento de Física, ITA, Instituto Tecnológico de Aeronáutica, São José dos Campos, São Paulo, 12228-900, Brazil
³ UNESP, Universidade Estadual Paulista, Guaratinguetá, SP, 12516-410, Brazil
⁴ UFCG, Universidade Federal de Campina Grande, Unidade Acadêmica de Física, Caixa Postal 10071, Campina Grande, Paraíba, 58109-970, Brazil
⁵ Departamento de Física, Instituto Tecnológico de Aeronáutica-ITA, São José dos Campos, São Paulo, 12228-900, Brazil

^* e-mail: fis04132@gmail.com

Received: 23 January 2018
Accepted: 21 October 2018
Published online: 30 October 2018

Abstract

In this work we derive and analyse cosmological scenarios coming from multi-component scalar field models. We consider a direct sum of a sine-Gordon with a Z2 model, and also a combination of those with a BNRT model. Moreover, we work with a modified version of the BNRT model, which breaks the Z2 Z2 symmetry of the original BNRT potential, coupled with the sine-Gordon and with the standard Z2 models. We show that our approach can be straightforwardly elevated to N fields. All the computations are made analytically and some parameters restriction is put forward in order to get in touch with complete and realistic cosmological scenarios.